Fuel cell system

A fuel cell system, comprising:

• a control valve configured to control a pressure of anode gas to be supplied to a fuel cell;
• a pressure detection unit configured to detect the pressure of the anode gas to be supplied to the fuel cell;
• and
• a controller in communication with the control value and the pressure detection unit, wherein the controller is programmed to:
• periodically and repeatedly set a target upper limit pressure and a target lower limit pressure as a target pressure of the anode gas;
• control the pressure of the anode gas by feedback-controlling the control valve based on the pressure of the anode gas detected by the pressure detection unit and the target pressure;
• set the smaller one of an upper limit value of the pressure of the anode gas set based on durability performance of the fuel cell and an upper limit value of the pressure of the anode gas set based on output performance of the fuel cell as an upper limit pressure of the anode gas;
• set a value smaller than the upper limit value as the target upper limit pressure when the upper limit value of the anode gas set based on the durability performance of the fuel cell is selected as the upper limit pressure of the anode gas;
• and
• set the upper limit value or a pressure higher than the upper limit value as the target upper limit pressure when the upper limit value of the anode gas set based on the output performance of the fuel cell is selected.